CN117752443A - Orthodontic appliance and orthodontic system - Google Patents

Abstract

The invention relates to an orthodontic appliance and an orthodontic system, wherein the orthodontic appliance comprises a main body, a cover body and a lock body, the bottom surface of the cover body is provided with a groove, the groove is provided with a closing position, a squeezing position and an opening position, the squeezing position is arranged between the closing position and the opening position, and the side walls of two opposite sides of the squeezing position are non-vertical planes from the top surface of the groove to the opening direction of the groove. The second end of the lock body is propped against the side walls of the two opposite sides of the extrusion position when sliding to the extrusion position, so that the torsion phenomenon of the lock body can be avoided; in addition, under the condition that the second end of the lock body is in conflict with the side walls on the two opposite sides of the extrusion position, the line contact or the contact surface between the second end of the lock body and the side walls on the two opposite sides of the extrusion position is reduced, and the cover body can be ensured to be opened and closed more smoothly.

Description

Orthodontic appliance and orthodontic system

Technical Field

The invention relates to the technical field of tooth correction, in particular to an orthodontic appliance and an orthodontic system.

Background

Orthodontic systems mainly include orthodontic appliances and archwires, which are important components of fixed correction techniques. Orthodontic appliances generally include orthodontic brackets and buccal tubes, which are directly secured to the surfaces of crowns when in use, with archwires threaded into the archwire slots of the orthodontic brackets and buccal tubes to apply various types of orthodontic forces to the teeth for orthodontic purposes.

The invention patent with the application number of CN201720477734.8 and the name of self-locking orthodontic bracket is disclosed with reference to fig. 1, wherein a locking wall 11 is arranged on a baffle member 10 along the sliding direction of the baffle member, an elastic locking member 12 matched with the baffle member is arranged at the locking wall 11, a self-locking convex part 13 is arranged between the locking wall 11 and the elastic locking member 12, and the size of the self-locking convex part 13 along the sliding direction is smaller than that of the elastic locking member 12 along the sliding direction.

However, when the blocking member 10 slides relative to the base (as shown by the direction of the dashed arrow in fig. 1) with such a self-locking orthodontic bracket, only the elastic leg 14 on one side of the elastic locking member 12 is deformed by contact with the self-locking protrusion 13, which may cause the elastic locking member 12 to twist, thereby affecting smooth opening and closing of the blocking member 10.

Disclosure of Invention

Accordingly, it is necessary to provide an orthodontic appliance and an orthodontic system which avoid twisting and ensure smooth opening and closing.

The utility model provides an orthodontic appliance, orthodontic appliance includes main part, lid and lock body, be equipped with the main slot on the main part, the main slot will the main part is separated into first working wing and second working wing, the lid slidable set up in on the second working wing in order for the main part slides, the bottom surface of lid is equipped with the recess, the recess is followed the slip direction of lid has closed position, extrusion position and open the position, the extrusion position is in closed position with open between the position, the relative both sides lateral wall of extrusion position is all from the top surface of recess to the opening direction of recess be non-vertical plane, the first end of lock body connect in the main part, with the second end opposite to the first end inserts in the recess under the second end of lock body is located the condition of extrusion position, the second end of lock body with the relative both sides lateral wall of extrusion position is even contradicted.

In one embodiment, the two opposite side walls of the extrusion position are inclined planes, convex arc surfaces, concave arc surfaces, wavy surfaces, serrated surfaces or stepped surfaces.

In one embodiment, in the case that the side walls of the opposite sides of the extrusion position are inclined surfaces, the included angle alpha between the inclined surfaces and the top surface of the groove ranges from 90 degrees to less than or equal to 110 degrees.

In one embodiment, the groove is a strip groove, and the width of the closing position and the width of the opening position are both larger than the width of the pressing position.

In one embodiment, the side wall of the closing position is in transitional connection with the side wall of the extrusion position through a first transitional surface, the side wall of the opening position is in transitional connection with the side wall of the extrusion position through a second transitional surface, and the first transitional surface and the second transitional surface are both inclined planes or smooth surfaces.

In one embodiment, the groove is a long-strip groove, the width of the closing position is larger than the width of the opening position and the width of the pressing position, and the width of the opening position and the width of the pressing position are equal or the width of the opening position is larger than the width of the pressing position.

In one embodiment, the grooves are curved arc-shaped grooves, and the number of the grooves is one; or alternatively

The grooves are curved arc-shaped grooves, the number of the grooves is two, the two grooves are arranged at intervals, the closing positions of the two grooves are close to or far away from each other, and/or the opening positions of the two grooves are close to or far away from each other.

In one embodiment, the lock body is an opening column, the second end of the opening column is provided with at least one abdication groove, the abdication groove divides the second end of the opening column into at least two stop bars which can be mutually closed, and the stop bars extend into the grooves.

In one embodiment, the lock body comprises two elastic columns arranged at intervals, two mounting holes are formed in the second working wing, the first ends of the elastic columns extend into the mounting holes, and the second ends of the elastic columns extend into the grooves.

An orthodontic system comprising an archwire for placement within the primary slot and an orthodontic appliance as in any one of the preceding claims.

The orthodontic appliance has at least the following advantages:

when the cover body of the orthodontic appliance is used, most of the time is in a closed state, the cover body covers the main groove, and the second end of the lock body is positioned at the closing position of the groove.

When the archwire is required to be placed in the main groove or the archwire in the main groove is required to be taken out for replacement, the cover body is firstly opened, namely, the cover body is pushed to slide relative to the main body by applying external force, and the second end of the lock body moves from the closing position to the extrusion position of the groove and finally moves to the opening position. When the cover body needs to be closed, external force is applied to push the cover body to reversely slide, and the second end of the lock body moves from the opening position of the groove to the extrusion position and finally moves to the closing position. Because the side walls on the two opposite sides of the extrusion position are non-vertical planes from the top surface of the groove to the opening direction of the groove, the second end of the lock body can be abutted against the side walls on the two opposite sides of the extrusion position when sliding to the extrusion position, so that the torsion phenomenon of the lock body can be avoided; in addition, the second end of the lock body is in line contact with the side walls on the two opposite sides of the extrusion position or the contact area between the second end of the lock body and the side walls on the two opposite sides of the extrusion position is far smaller than the contact area between the second end of the lock body and the side walls of the extrusion position in the background technology (the side walls of the extrusion position in the background technology are vertical planes), so that the cover body can be ensured to be opened and closed more smoothly.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention.

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a bottom view of a stop for a self-ligating orthodontic bracket as referred to in the background;

fig. 2 is a schematic structural view of an orthodontic appliance according to an embodiment of the present application, in which a cover is in a closed state;

fig. 3 is another schematic view of the orthodontic appliance of fig. 2, with the lock body and groove mating relationship shown in phantom;

FIG. 4 is a cross-sectional view of FIG. 2;

FIG. 5 is another cross-sectional view of FIG. 2;

fig. 6 is a schematic view of the orthodontic appliance of fig. 2 with the cover in an open state;

fig. 7 is another schematic view of the orthodontic appliance of fig. 6, with the lock body and groove mating relationship shown in phantom;

FIG. 8 is a cross-sectional view of FIG. 6;

FIG. 9 is another cross-sectional view of FIG. 6;

FIG. 10 is a cross-sectional view of the cover of FIG. 2;

FIG. 11 is a bottom view of the cover of FIG. 2;

FIG. 12 is a schematic perspective view of the cover of FIG. 2;

fig. 13 is a cross-sectional view of a cover in another embodiment.

Reference numerals illustrate:

10. a blocking member; 11. a locking wall; 12. an elastic locking piece; 13. a self-locking convex part;

100. an orthodontic appliance; 110. a main body; 120. a cover body; 130. a lock body; 111. a main trench; 112. a first working wing; 113. a second working wing; 114. a mounting hole; 140. a bottom plate; 115. a slideway; 121. a slide rail; 122. a groove; 123. a closed position; 124. an extrusion position; 125. an open position; 120a, the bottom surface of the cover body; 120b, top surface of the cover body; 126. side walls on two opposite sides of the extrusion position; 131. a first end; 132. a second end; 127. a sidewall of the closure position; 129. a sidewall of the open position; 122a, the top surface of the groove; 129a, a first transition surface; 129b, a second transition surface.

Detailed Description

It should be noted that, the orthodontic appliance mentioned in the present invention refers to an orthodontic bracket or buccal tube, or other appliances having similar functions and similar structures.

In the following structural description, reference frames to the maxillary teeth are required to describe embodiments of the present invention unless otherwise indicated, and thus, as used herein, terms such as labial, lingual, mesial, distal, occlusal, gingival are relative to selected reference frames for use in describing orthodontic appliances. However, embodiments of the present invention are not limited to the chosen frame of reference and the terms described, as orthodontic appliances may be used on other teeth and in other directions within the oral cavity.

For example, brackets or buccal tubes may also be coupled to lingual surfaces of the teeth and fall within the scope of the invention. Those skilled in the art will appreciate that the descriptive terms used herein may not be directly applicable when there is a change in the frame of reference. However, embodiments of the present invention are intended to be independent of the position and orientation within the oral cavity and the relative terms used to describe the embodiments are merely provided with an explicit description of the embodiments in the drawings. Likewise, the relative terms labial, lingual, mesial, distal, occlusal and gingival are in no way limiting the invention to a particular location or orientation.

The related terms labial, lingual, mesial, distal, occlusal and gingival are industry terms for orthodontic treatment. Taking a certain tooth of the upper jaw as an example, the surface of the tooth may be roughly divided into six faces. The surface of the tooth which is occluded with the mandibular tooth is an occlusal surface; the face of the tooth to which the attached gingival tissue is attached is the gingival face; the occlusal surface is opposite to the gingival surface, and the direction in which the occlusal surface is formed is also called the gingival-jaw direction. The face of the tooth facing the lip is a labial face, the face of the tooth facing the tongue is a lingual face, the labial face and the lingual face are opposed to each other, and a direction in which the labial face and the lingual face are formed is also called a labial-lingual direction. The two surfaces of the tooth which are in contact with the adjacent tooth are a mesial surface and a distal surface, respectively, which are different in that the distance from the middle is far and near, and the direction in which the two surfaces are formed is also called a mesial-distal direction or a mesial-distal direction.

And in the description of directions, such as the labial and lingual directions, are commonly referred to as bi-directional. And, as the labial-lingual direction, a single direction is specifically referred to as the direction from the labial side to the lingual side, and is distinguished.

The orthodontic appliance in one embodiment comprises a main body, a cover body and a lock body, wherein a main groove is formed in the main body and divides the main body into a first working wing and a second working wing, and the cover body is slidably arranged on the second working wing so as to slide relative to the main body. The bottom surface of lid is equipped with the recess, and the recess has to close position, extrusion position and open the position along the slip direction of lid, and the extrusion position is between closing position and opening the position, and the opposite both sides lateral wall of extrusion position is the non-vertical plane from the top surface of recess to the opening direction of recess. The first end of the lock body is connected to the main body, the second end opposite to the first end is inserted into the groove, and under the condition that the second end of the lock body is located at the extrusion position, the second end of the lock body is abutted against the side walls on two opposite sides of the extrusion position. It should be explained that the opposite side walls of the extrusion position are non-vertical planes from the top surface of the groove to the opening direction of the groove, and it is also understood that the opposite side walls of the extrusion position are non-vertical planes in the lip-tongue direction.

When the cover body of the orthodontic appliance is used, most of the time is in a closed state, the cover body covers the main groove, and the second end of the lock body is positioned at the closing position of the groove.

When the archwire is required to be placed in the main groove or the archwire in the main groove is required to be taken out for replacement, the cover body is firstly opened, namely, the cover body is pushed to slide relative to the main body by applying external force, and the second end of the lock body moves from the closing position to the extrusion position of the groove and finally moves to the opening position. When the cover body needs to be closed, external force is applied to push the cover body to reversely slide, and the second end of the lock body moves from the opening position of the groove to the extrusion position and finally moves to the closing position. Because the side walls on the two opposite sides of the extrusion position are non-vertical planes from the top surface of the groove to the opening direction of the groove, the second end of the lock body can be abutted against the side walls on the two opposite sides of the extrusion position when sliding to the extrusion position, so that the torsion phenomenon of the lock body can be avoided; in addition, the second end of the lock body is in line contact with the side walls on the two opposite sides of the extrusion position or the contact area between the second end of the lock body and the side walls on the two opposite sides of the extrusion position is far smaller than the contact area between the second end of the lock body and the side walls of the extrusion position in the background technology (the side walls of the extrusion position in the background technology are vertical planes), so that the cover body can be ensured to be opened and closed more smoothly.

It should be noted that when the number of grooves is one, the opposite side walls of the pressing position are two opposite side walls of the groove. When the number of grooves is two and arranged at a distance from each other, the opposite side walls of the press nip can be understood as the side wall of each groove adjacent to the other groove or as the side wall actually functioning as the press nip. The side wall that does not act as the pressing location is not limited.

Specific examples are set forth below.

Referring to fig. 2 to 9, an orthodontic appliance 100 according to an embodiment includes a main body 110, a cover 120 and a lock 130, wherein a main slot 111 is provided on the main body 110, the main slot 111 divides the main body 110 into a first working wing 112 and a second working wing 113, and a mounting hole 114 is provided on the second working wing 113. In this embodiment, the orthodontic appliance 100 further includes a base plate 140, and the base plate 140 is disposed at the bottom of the main body 110. When it is desired to attach the orthodontic appliance 100 to a tooth surface, an adhesive may be applied to the base plate 140 to adhere the base plate 140 to the tooth surface. Of course, in other embodiments, the base plate 140 may be omitted and adhesion to the tooth surface may be achieved by directly applying adhesive to the bottom surface of the body 110. Of course, in other embodiments, the lock body may be directly fixed to the second working wing, or integrally formed on the second working wing, instead of the mounting hole provided on the second working wing.

The cover 120 is slidably disposed on the second working wing 113 to slide with respect to the main body 110. For example, the second working wing 113 may be provided with a slide rail 115, and correspondingly, the cover 120 is provided with a slide rail 121 matched with the slide rail 121, so as to achieve the purpose of sliding the cover 120 relative to the main body 110.

Referring to fig. 10 to 12, a bottom surface 120a of the cover body is provided with a groove 122, the groove 122 has a closing position 123, a pressing position 124 and an opening position 125, and the pressing position 124 is between the closing position 123 and the opening position 125. The opposite side walls 126 of the pressing place are symmetrical about the center line (shown by the broken line in fig. 11) of the groove 122 and are inclined, and the interval between the opposite side walls 126 increases toward the opening direction of the groove 122 along the top surface 122a of the groove. That is, the opposite side walls 126 of the pressing place are flared in the direction of the bottom surface 120a along the top surface 120b of the cover. In addition, it should be noted that the opposite side walls 126 of the extrusion position are symmetrical about the centerline of the groove 122, including not only absolute symmetry, but also a certain range of symmetry errors should be allowed.

Referring to fig. 4, 8 and 9, the lock body 130 includes a first end 131 and a second end 132 disposed opposite to each other, the first end 131 of the lock body 130 extends into the mounting hole 114, and the second end 132 extends out of the mounting hole 114 and is inserted into the recess 122. The lock body 130 is mainly used to cooperate with the recess 122 of the cover 120 to maintain the opened and closed state of the cover 120.

Specifically, when the cover 120 is in a closed state relative to the main body 110, the cover 120 covers the main groove 111, and the second end 132 of the lock 130 is at the closed position 123 of the recess 122. When the cover 120 is in an open state relative to the main body 110, the cover 120 does not cover or does not completely cover the main groove 111, and at this time, the second end 132 of the lock body 130 is at the open position 125 of the recess 122. While the second end 132 of the lock body 130 is mainly in transition stage at the pressing position 124 of the recess 122, for example, the second end 132 of the lock body 130 slides from the opening position 125 of the recess 122 to the pressing position 124 to the closing position 123, and the cover 120 is closed; or the second end 132 of the lock body 130 is slid from the closing position 123 to the pressing position 124 of the recess 122 to the opening position 125, and the cover 120 is opened. With the second end 132 of the lock body 130 positioned in the compression position 124, the second end 132 of the lock body 130 abuts the opposite side walls 126 of the compression position.

In use, the cover 120 of the orthodontic appliance 100 is in a closed position most of the time, where the cover 120 covers the primary slot 111 and the second end 132 of the lock 130 is positioned in the closed position 123 of the slot 122.

When an archwire is to be placed in the main slot 111 or when an archwire in the main slot 111 is to be replaced, the cover 120 is first opened, i.e., an external force is applied to push the cover 120 to slide relative to the main body 110, the second end 132 of the lock 130 moves from the closed position 123 to the squeezed position 124 of the recess 122 and finally to the open position 125. When the cover 120 needs to be closed, an external force is applied to push the cover 120 to slide reversely, and the second end 132 of the lock body 130 moves from the opening position 125 of the groove 122 to the pressing position 124 and finally to the closing position 123. Since the opposite side walls 126 of the pressing position are symmetrical and inclined with respect to the center line of the groove 122, the second end 132 of the lock body 130 will collide with the opposite side walls 126 of the pressing position when sliding to the pressing position 124, so that the twisting phenomenon of the lock body 130 can be avoided; in addition, in the case that the second end 132 of the lock body 130 abuts against the opposite side walls 126 of the extrusion position, the second end 132 of the lock body 130 is in line contact with the opposite side walls 126 of the extrusion position, so that the cover 120 can be ensured to be opened and closed more smoothly due to the positioning function in the labial-lingual direction of the orthodontic appliance 100.

Although, as the orthodontic appliance 100 is used, the second end 132 of the lock body 130 is continuously worn away from the opposite side walls 126 of the extrusion site, the line contact between the second end 132 of the lock body 130 and the opposite side walls 126 of the extrusion site gradually becomes a surface contact. However, even after wear, the contact area between the second end 132 of the lock body 130 and the opposite side walls 126 of the pressing position in this embodiment is much smaller than in the conventional case where the side walls of the pressing position are vertical planes.

Referring to fig. 10, in particular, in the case where the side walls 126 of the pressing position 124 are inclined surfaces on opposite sides, the angle α between the inclined surfaces and the top surface 122a of the groove ranges from 90 ° < α+.ltoreq.110°. If the included angle α is too large, the durability of the cover 120 will be poor during the use of the orthodontic appliance 100, and the opening and closing effects of the cover 120 will be poor after the side walls 126 on the opposite sides of the extrusion position of the cover 120 are worn. Thus, the range of the angle α between the inclined surface and the top surface 122a of the groove is set within a reasonable range of 90 ° < α+.ltoreq.110°. For example, the included angle α has a value of 95 °, 98 °, 100 °, 102 °, 105 °, 107 ° or 110 °.

Referring to fig. 13, in other embodiments, the opposite side walls 126 of the pressing portion are convex circular arc surfaces, concave circular arc surfaces, wavy surfaces, saw tooth surfaces or stepped surfaces. The contact between the second end of the lock body and the side wall of the extrusion position can be realized as linear contact, or the contact area between the second end of the lock body and the side wall of the extrusion position is reduced, so that the friction force is reduced, and the smoothness of opening the cover is ensured.

Referring to fig. 11 and 12, in the present embodiment, the recess 122 is an elongated recess, and the width of the closing position 123 and the opening position 125 is greater than the width of the pressing position 124. Specifically, the elongated grooves extend substantially in a direction perpendicular to the main groove 111 to provide a stroke length required for opening and closing the cover 120. The width of the closing position 123 and the width of the opening position 125 are both set to be larger than the width of the pressing position 124, so that when the lock body 130 is located at the closing position 123, the cover body 120 is effectively ensured to be in a closing state, and the misoperation is prevented. When the lock 130 is located at the opening position 125, the cover 120 is effectively guaranteed to be in an opening state, and erroneous closing is prevented.

In this embodiment, the lock body 130 is an opening column, the second end 132 of the opening column has a yielding groove, and the yielding groove divides the second end 132 of the opening column into two stop strips that can be mutually closed, and the stop strips extend into the groove 122. Therefore, when the cover 120 is closed, the stop bar is located at the closing position 123 of the groove 122, and the stop bar is in a completely relaxed state (i.e. not pressed) or in a state where the pressing force is small. When the cover 120 is opened, the stop bar is located at the opening position 125 of the groove 122, and similarly, the stop bar is in a completely relaxed state (i.e. not pressed) or in a state where the pressing force is smaller. When the cover 120 is transited from the closed state to the open state or from the open state to the closed state, the stopper bars are pressed by the opposite side walls 126 of the pressing position and are close to each other, and the stopper bars are in a state of being subjected to a large pressing force.

Of course, in other embodiments, the second end 132 of the opening post has two or more relief grooves that divide the second end 132 of the opening post into three or more stop bars that are drawn toward each other.

Referring to fig. 11 and 12 again, in the present embodiment, the side wall 127 of the closing position and the side wall 126 of the pressing position are in transitional connection through a first transitional surface 129a, the side wall 129 of the opening position and the side wall 126 of the pressing position are in transitional connection through a second transitional surface 129b, and the first transitional surface 129a and the second transitional surface 129b are both inclined planes or smooth surfaces. Therefore, the sliding of the lock body 130 from the closing position 123 to the pressing position 124 or the sliding of the lock body 130 from the opening position 125 to the pressing position 124 can be ensured to be smoother.

In other embodiments, the recess 122 is an elongated recess, the width of the closing position 123 is greater than the width of the opening position 125 and the pressing position 124, the width of the opening position 125 and the pressing position 124 are equal or the width of the opening position 125 is greater than the width of the pressing position 124. Ensuring that the width of the closing position 123 is greater than the width of the opening position 125 and the pressing position 124 ensures that the cover 120 cannot be easily or erroneously opened when the lock 130 is in the closing position 123.

In other embodiments, the grooves are curved arcuate grooves, and the number of grooves is one. Or the grooves are curved arc-shaped grooves, the number of the grooves is two, the two grooves are arranged at intervals, the closing positions of the two grooves are close to or far away from each other, and/or the opening positions of the two grooves are close to or far away from each other. When the number of grooves is two, the grooves are respectively a first groove and a second groove, the lock body can be an opening column with two stop bars, one stop bar is contacted with one side wall (the side wall adjacent to the second groove) of the first groove, and the other stop bar is contacted with one side wall (the side wall adjacent to the first groove) of the second groove. Or when the number of the grooves is two, the grooves are respectively a first groove and a second groove, the lock body is provided with two elastic columns which are arranged at intervals, one elastic column is contacted with one side wall (the side wall adjacent to the second groove) of the first groove, and the other elastic column is contacted with one side wall (the side wall adjacent to the first groove) of the second groove.

In other embodiments, the lock body 130 may further include two elastic posts disposed at intervals, and the elastic posts may be hollow posts or solid posts. The second working wing 113 is provided with two mounting holes 114, the first ends 131 of the elastic columns extend into the mounting holes 114, and the second ends 132 of the elastic columns extend into the grooves 122. Or the lock body 130 includes an elastic column with a cross section of a "C" shape.

The present application also provides an orthodontic system comprising an archwire for placement within a primary slot 111, and an orthodontic appliance 100 as in any one of the embodiments above. A pair of orthodontic systems may be provided with at least two archwires for use in different stages of the appliance. A set of orthodontic systems may be provided with at least two orthodontic appliances 100, the orthodontic appliances 100 being adapted to adhere to a tooth surface.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Claims (10)

1. The utility model provides an orthodontic appliance, its characterized in that, orthodontic appliance includes main part, lid and lock body, be equipped with the main slot on the main part, the main slot will the main part is separated into first working wing and second working wing, the lid slidable set up in on the second working wing in order to slide for the main part, the bottom surface of lid is equipped with the recess, the recess is followed the slip direction of lid has closed position, extrusion position and open the position, the extrusion position is in between the closed position with open the position, the opposite both sides lateral wall of extrusion position all is non-vertical plane from the top surface of recess to the opening direction of recess, the first end of lock body connect in the main part, with the second end that first end is relative inserts in the recess under the second end of lock body is located the extrusion position, the second end of lock body with the opposite both sides lateral wall of extrusion position homoenergetic is contradicted.

2. The orthodontic appliance of claim 1 wherein the opposing side walls of the extrusion site are each beveled, convex arcuate, concave arcuate, wavy, serrated or stepped.

3. The orthodontic appliance of claim 2, wherein, in the case where the side walls of the opposite sides of the pressing position are inclined surfaces, an angle α between the inclined surfaces and the top surface of the groove ranges from 90 ° < α+.ltoreq.110 °.

4. The orthodontic appliance of claim 1, wherein the groove is an elongated groove, and wherein the width of the closed position and the open position are both greater than the width of the squeeze position.

5. The orthodontic appliance of claim 4, wherein the side wall of the closed position is in transitional connection with the side wall of the squeezed position through a first transitional surface, the side wall of the open position is in transitional connection with the side wall of the squeezed position through a second transitional surface, and the first transitional surface and the second transitional surface are both inclined planes or smooth surfaces.

6. The orthodontic appliance of claim 1, wherein the groove is an elongated groove, the width of the closed position being greater than the width of the open position and the squeeze position, the width of the open position and the squeeze position being equal or the width of the open position being greater than the width of the squeeze position.

7. The orthodontic appliance of claim 1 wherein the groove is a curved arcuate groove and the number of grooves is one; or alternatively

The grooves are curved arc-shaped grooves, the number of the grooves is two, the two grooves are arranged at intervals, the closing positions of the two grooves are close to or far away from each other, and/or the opening positions of the two grooves are close to or far away from each other.

8. The orthodontic appliance of claim 1 wherein the lock body is an open post, the second end of the open post having at least one relief groove dividing the second end of the open post into at least two stop bars that can be moved toward one another, the stop bars extending into the groove.

9. The orthodontic appliance of claim 1 wherein the lock body includes two spaced apart resilient posts, the second wing having two mounting holes formed therein, a first end of the resilient posts extending into the mounting holes and a second end of the resilient posts extending into the recess.

10. An orthodontic system comprising an archwire for placement within the primary slot and an orthodontic appliance as claimed in any one of claims 1 to 9.